<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
h2,
p {
    margin: 0;
}    
.box {
    margin: 30px auto;
    width: 300px;    
}
#user,
#message {
    box-sizing: border-box;
    width: 300px;
    border: 1px solid #000;
    padding: 10px;
    height: 100px;
    resize: none;
    display: block;
}
#user {
    padding: 0 10px;
    height: 30px;
    margin-bottom: 10px;
}
#btn {
    display: block;
    margin: 10px auto;
    width: 60%;
    height: 40px;
}
#list {
    border-top: 1px solid #000;
    padding: 10px 0 0;
    margin: 0;
    list-style: none;
}
#list li {
    position: relative;
    font: 14px/30px "宋体";
    border-bottom: 1px solid #000;
    padding: 0 15px;
    overflow: hidden;
}
.clos {
    position: absolute;
    right: 5px;
    top: 10px;
}
.clos2 {
    position: absolute;
    right: 5px;
    top: 30px;
}
.replay{
    position:absolute;
    right: 5px;
    top: 35px;
}
.mask{
    width: 100vw;
    height: 100vh;
    background: black;
    opacity: .3;
    position: absolute;
    left: 0;
    top: 0;
    display: none;
}
.comfirm{
    width: 200px;
    height: 120px;
    background: white;
    text-align: center;
    position: absolute;
    left: 50%;
    top: 30%;
    border-radius: 5px;
    transform: translate(-50%,-50%);
    overflow: hidden;
    display: none;
    
}
.comfirm button{
    /* position: absolute; */
    /* right: 10px; */
    float:right;
    margin-top: 20px;
    margin-right: 10px;
}

</style>
</head>
<body>
<div class="box">
    <input type="text" id="user" value="小明" />
    <textarea id="message">我就是传说中的无敌小明</textarea>
    <button id="btn">提交留言</button>
    <ul id="list">
        <li style="height: auto">
            <h2 class="user">小王说:</h2>
            <p>呼叫无敌小明</p>
            
            <a href="javascript:;" class="clos">删除</a>
            <a href="javascript:;" class="clos2">回复</a>
        </li>
        <li style="height: auto">
            <h2 class="user">老师说:</h2>
            <p>小明滚出去</p>
            <p>回复的内容</p>
            <a href="javascript:;" class="clos">删除</a>
        </li>
    </ul>
    
   
</div>
<script>
    // 直接写；
    // 数据驱动；
    var usernameEle = document.querySelector("#user");
    var contentEle = document.querySelector("#message");
    var btnELe = document.querySelector("#btn");
    var ulEle = document.querySelector("#list");
    // content context  splice  split  slice :数组或者字符串方法
//     var str = "abcedfg";
//    var res =  str.slice(1,4);  //包前不包后  substring
//    console.log(res);
//     var arr = ["a","b","c","d"];
//    var res =  arr.slice(1,3);
//     // console.log(arr);
//     console.log(res);
ulEle.innerHTML = "";
btnELe.onclick = function(){
    var username = usernameEle.value;
    var content = contentEle.value;
    
    // console.log(username,content);
    // 创建一个li标签
    var liEle = document.createElement("li");
    liEle.style.height = "auto";
    liEle.innerHTML = `<h2 class="user">${username}说:</h2>
                        <p>${content}</p>
                        <a href="javascript:;" class="clos">删除</a>
                        <a href="javascript:;" class="clos2">回复</a>`;
    var delEle = liEle.querySelector(".clos");
    delEle.onclick = function(){
            this.parentNode.remove();
    }
    ulEle.appendChild(liEle);
}






</script>
</body>
</html>